The secret is not the air conditioning.
Passive solar design works with Perth's sun, wind and temperature patterns to keep your home comfortable naturally. Our homes regularly achieve 8 to 10 star NatHERS ratings by designing for the climate from the first sketch.
Your home should not be working against you
If you have lived in a standard double-brick home in Perth, you know the feeling. It is 7 pm on a February evening, the sun set an hour ago, and the house is still radiating heat into every room.
This is not a design flaw. It is a construction choice. Standard double-brick homes absorb heat through the day and release it inward through the evening. Your walls become a thermal battery working in reverse.
Most Perth builders still build this way because it is what they know. There is a smarter approach, and it starts with how your home interacts with the climate around it.
Five elements that change how your home performs
Instead of fighting the climate with mechanical systems, passive solar design uses it. Every element works together. Remove one and the system underperforms.
Orientation
We position your home to capture the low winter sun through north-facing living areas and shade from the high summer sun.
Reverse brick veneer
Brick goes inside as thermal mass. Insulation goes outside. Most Perth builders do not offer this method.
High-performance glazing
Double-glazed, low-E glass with thermally broken uPVC frames, specified for the orientation of each window.
Cross-flow ventilation
We design window and door placement to capture the Fremantle Doctor and pull it through your home.
Continuous insulation
Walls, roof and ceiling wrapped in a continuous layer with no thermal bridges. Heat does not find a shortcut in.
Passive solar is not the same as Passiv Haus
This is one of the most common points of confusion, and it matters because the two approaches suit different lifestyles.
Passive solar design works with Perth's orientation, thermal mass and natural ventilation. It is built around opening your home to the outdoors, capturing breezes and using the sun's position to your advantage.
Passiv Haus is a certified European standard based on an airtight envelope with mechanical ventilation. It offers the highest measurable thermal performance if built to certification spec, but requires a sealed building with controlled airflow.
We build both. For most Perth homeowners, passive solar design combined with reverse brick veneer delivers the best balance of performance, comfort and lifestyle.
Investing in performance. Does it cost more?
A high-performance home is an investment in longevity and comfort that standard builds cannot match.
While specialized wall systems and high-performance glazing require a higher initial budget, the true cost of a home includes its lifetime running expenses. A standard home is a liability of fluctuating energy prices; a Norde home is an asset that retains value and promotes well-being.
An 8-to-10-star home provides more than just lower bills. It offers consistent indoor temperatures, acoustic privacy, and a healthier living environment year-round. We work with you to find the sweet spot where building science meets your budget—ensuring you invest where it matters most for long-term value.
Common questions about passive solar
The questions we hear most from people considering a passive solar home in Perth.
Yes. The orientation of your block affects the design, but it does not rule out passive solar. We adjust the floor plan, window placement and shading to make the most of what your site offers. Some of our highest-rated homes are on blocks that other builders would call difficult.
Yes. We design two-storey passive solar homes and use thermal chimney effects and stack ventilation to move air naturally between levels.
Our passive solar homes consistently achieve between 8 and 10 star NatHERS ratings. The exact rating depends on your block, orientation, design choices and budget. We will give you an honest estimate early in the design process.
Not easily. Passive solar is a design-stage decision, not something you retrofit after the slab is poured. Orientation, thermal mass placement and insulation strategy all need to be considered before construction begins.
For existing homes, we can often improve performance through targeted renovation, but it will not match a purpose-built passive solar design.
Start your design conversation
Tell us about your block and how you want to live in your home. We will let you know how passive solar design could work for your project.
Get in touch